Sheldon: I don't understand why you're not enjoying this. Together, in this car, with my enhanced capabilities, we're like 'Knight Rider.'Leonard: Except, in Knight Rider, the car isn't a yammering sphincter.Sheldon: You mock the sphincter, but, the sphincter is a class of muscle without which human beings couldn't survive. There are over 50 different sphincters in the human body. How many can you name?Leonard: I was wrong. This is exactly like Knight Rider